CIYOYO 2015New Bluetooth Smart Watch Wrist Wrap Watch Phone for IOS Apple iphone 4/4S/5/5C/5S Android Samsung S2/S3/S4/S5/Note 2/Note 3 HTC(White) Material: Steel + Silicon; Dial Size: 4.6 x 4.2 x 1cm / 1.81 x 1.65 x 0.39 inch; Package includes: 1 x Bluetooth Watch 1 x User Manual; Android System can support all function in the description;BUT IOS only support:Passometer,Calendar,Call Sync,Calculator,Clock,Stopwatch.